Resume from sleep failure - power up

Have a Windows 7 PC working fine for 6 months, now fails to resume from sleep every time. On attempting to resume the PC appears to go through a powering up loop (Hard disk and fan spin up) which then goes off and repeats indefinitely till you force the power off by holding town power button.

When changing 'allow hybrid sleep' in Power Settings to disable; it cured it for a few days. The issue came back, so tried enabling this setting - same result. Disabled again, same result.

Update Intel Graphics Drivers to latest. Fixed the issue again, just for a few days.

What's going on? It doesn't seem possible it's a hardware issue but am baffled.

Thanks.

Please type the following in elevated command prompt and let us know what is supported.

powercfg -a

Also might help if you uploaded the event viewer logs

Please provide us with your Event Viewer administrative logs by following these steps:


Click Start Menu
Type eventvwr into Search programs and files (do not hit enter)
Right click eventvwr.exe and click Run as administrator
Expand Custom Views
Click Administrative Events
Right click Administrative Events
Save all Events in Custom View As...
Save them in a folder where you will remember which folder and save as Errors.evtx
Go to where you saved Errors.evtx
Right click Errors.evtx -> send to -> compressed (zipped) folder
Upload the .zip file here.